Vacuum cleaner



Oct. 30, 1928.

I or/144m. I.

Y Ililltttg M WITT VACUUM CLEANER Flled July 12 1926 Patented Oct. 30,1928.

UNITED STATES PATENT OFFICE.

MILTON WIT'I, OF BUFFALO, NEW'YORK.

' 'VACUUM'. CLEANER.

Application filed. July 12, 1926. Serial No. 121,7 68.

the deeply'embedded dust and dirt'and cleaning'lint and hairs from thenap of .the rug or carpet without injuring it.

The object of the invention is to increase the nap-loosening action ofthe brush, in order to more fully utilize the cleaning action of IO thevacuum.

In the accompanying drawings: Figure 1 is a side elevation of a vacuumcleaner, partly in section, embodying the invention. Figure 2 is abottom plan view thereof. Figure 3 is a 15 transverse vertical section,on an enlarged scale, of the vacuum chambercontaining the oscillatorybrush.

Similar characters of reference indicate corresponding parts in theseveral views;

indicates the hollow body or frame of the machine supported by the usualwheels 11 and provided at its front end with a depen'd;

ing vacuum chamber 12 of any ordinary construction having the customarynozzle13- 95 which slides upon the rug, carpet or other obj ect to becleaned. The body contains any suitable vacuum creating device, such asa fan 14, shown by dotted lines in the drawings, the same being drivenby an electric or other ap- .propriate motor 15 also indicated by dottedlines. In the preferred form shown in the drawings, the fan is housed ina cylindrical enlargementlfi of the body, to the rear side of-which issecured the usual hanger-bracket 17 which receives a handle 18 shown bydotted lines in Fig. 1.

Arranged in the vacuum or nozzle chamber 12 is a brush having a sweepingsurface preferably consisting of tufts or bristles 19 projecting fromthe underside of the brush-stock or roller 20 which is journaled at itsend in bearings formed in the end walls of the vacuum chamber. In thepreferred arrangement of the bristles. shown in the drawings, the sameare disposed in two parallel rows, the bristles in one row beingstaggered relatively to those of the companion row.

The brush is oscillated or otherwise moved back and forth during the useof the cleaner and it is so mounted in the vacuum chamber that" itsbristles contact with the rug or other object to be cleaned both duringthe forward and backwardstrokes' of the brush, so asto effectuallyloosen and separate the nap or rugfibres and quickly and thoroughlydisengage the dirt from them as well as any clinging lint orhairs,thereby subjecting the same to the suction-action of the Vacuum, fullyutilizing its cleaning capacity and expediting the 'operation.

Any suitable mechanism may be employed for actuatingthebrush.Forexample,asshown in the drawings, it is oscillated by the electricmotor 15 which drives the fan, through. a worm gearing 22 including anupright rotary shaft 23 journaled in the rear portion of the frame 10and carrying a crank-member 24 which is connected by a link 25 with arock arm 26 secured to the brush stock 20, whereby the rotary motion ofsaid shaft imparts oscilv latory. motion to the brush. As shown inFigures 2 and 3, the rock arm is arranged centrally on the brush stockand operates in a com-- partment 27 formed in the nozzle 13, the rearwall of such compartment having anopening "28 for the passage of thelink 25.

I claim as my invention:

In a vacuum cleaner, the combination of a frame having a vacuum chamberterminating in a nozzle, a compartment formed in the nozzle below and incommunication with said vacuum chamber, said compartment having anopening in its rear wall, an oscillatory brush mounted on said frame andextending through said compartment, the brush having a rock arm thereonoperable in said compartment, and actuating mechanism for the brushincluding a rotary crank member and a link connecting the rock arm withthe crank member, said parts being located exterior of the framemerit-opening.

MILTON WITT.

